Cat litter box



FIG. 1 is a front view of a cat litter box, showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left elevational view thereof;

FIG. 6 is a right elevational view thereof; and,

FIG. 7 is a perspective view thereof.

The broken lines in the drawings show portions of the cat litter boxwhich form no part of the claimed design.

CLAIM The ornamental design for a cat litter box, as shown anddescribed.